如何在elasticsearch url php中获取基数

Question

I am getting the cardinality count using Curl it was working fine. I need to get the same result in URL passing.

here is my curl query

$json = '{
    "query": {
        "multi_match": {
            "query":       "Associate",  
            "fields":      ["jt_tax"]
        } 
    },
    "aggs" : {
    "lawfirmcount" : {
        "cardinality" : {
            "field" : "pd_lawfirmID",
            "precision_threshold": 100
    }
   }
  }
}';

$params['index'] = 'jdbc';
$params['type']  = 'jdbc';
$params['body'] = $json;
$results = $client->search($params);

When i use the above query i received results as below

"aggregations": {
        "lawfirmcount": {
            "value": 226
        }
    }

This was correct result. I need to pass the same in below URL.

http://localhost:9200/jdbc/_search

Please help me.

Thanks in Advance